The storm "seriously" damaged the center of the island with winds up to 256 kilometers per hour, according to Cuban state media. And it's not the only island to feel the impact.
"But I've absolutely no doubt that we can face up to the challenge, we can deliver the help that those islanders need, we are seeing some signs of improvement, things are getting better on BVI, we've now got to make sure Anguilla gets the help it needs". More than 30 people are known to have died in the Caribbean.
MARTIN: Can you give us a sense of how extensive the damage is in Cuba?
Some 1,500 people have been deployed so far including emergency personnel, troops and police officers. Even its outer reaches were powerful enough to send waves of up to 36 feet (12 meters) chasing into Havana's historic seafront boulevard on Sunday. Barbuda, our sister island has been declared a disaster area.
The storm also grazed Puerto Rico, the Dominican Republic and Haiti before pummeling parts of Cuba. Cuba earns a lot of money by sending doctors to work for pay in other countries. Also, salt spray whipped up by the hurricane can damage and desiccate leaves while they are still on the trees.
The shocking pictures show just how devastating the hurricane has been as it turned most of the Caribbean Islands brown.
The devastating effect of Hurricane Irma was captured from space.
We were told on Thursday afternoon by hotel staff that the bar and restaurant would close at 8pm and all English speaking TV was disconnected that morning.
WEISSENSTEIN: The Leeward Islands on the northeast edge of the Caribbean were hit first and were hit worst and are taking the longest to recover.
As Osadchaya was leaving the BVI she saw the Royal Navy arriving with personnel, vehicles and helicopters, she said, but with numerous islands badly damaged there is still a large task ahead to get the emergency under control, she said. And the French and Dutch and US governments that have jurisdiction there have been trying to send in aid and law enforcement, but things are still very bad in all those places.
Macron said 2,000 people have already been evacuated from St. Martin's French territory and new flights are going to be organized by the end of the week.
WEISSENSTEIN: Evacuation has begun.
"We must get more help to the islands to rebuild homes and infrastructure and restore power, clean water, and food supplies", he said.
"I think they are unjustified", he added. I mean, what is the place that people should be most concerned about now? We're hearing about 90 percent of the structures damaged, water out, power out, looting, shots fired.
He said consular staff were in the region trying to get in touch with Britons who were on other Caribbean islands, not under British responsibility. But that's the place that was really in bad shape for the longest.
"We took shelter from the strongest hurricane ever inside the concrete cellar on Necker and very, very fortunately it held firm".
MARTIN: That's Michael Weissenstein. He's with us now from Havana.